Radon
Definition
Radon is a naturally occurring element found in a gaseous state in rocks and soil.¹ Radon exists in certain types of geologic formations. The EPA has a radon map and most states have their own maps of where radon is likely to exist underground. Here is an example of California’s radon map, where we have only a few areas with high risk of radon. In Wisconsin, 1:10 homes have high levels of radon. The Wisconsin Department of Health Services has some excellent information, including a quick video, on radon. Other states may vary.
Radon Exposures
Radon can enter homes through cracks in walls, basements and through other openings in home foundations. Although it can be found anywhere outside due to its natural origin, the amount that can be trapped indoors can lead to dangerous levels that affect health.¹ Most of your risk from radon in water comes from radon released into the air when water is used for showering and other household purposes.
Health Impact
Radon is the second leading cause of lung cancer in the United States. It is the leading cause of lung cancer for non-smokers. Exposure to radon causes no immediate symptoms, but the long-term threat of lung cancer caused by radioactive particles trapping in the lungs is a risk to anyone who is chronically exposed. ¹ ²
Steps for Prevention and Remediation ¹ ²
Radon has been found in high amounts in homes in every state. If you are in an area of risk, testing is the only way to know if radon is a problem in your home. Radon testing is low cost ($17-$27), and it can save your life. Contact your state radon program to find qualified professionals to help navigate how to address radon issues in your home.
- If you have questions about your radon risk, refer to your state’s radon program.
- If your house is located in a radon risk area, then it should be tested for radon exposures.
Additional Resources
Reference List
1. American Lung Association. Radon. Available at: https://www.lung.org/clean-air/indoor-air/indoor-air-pollutants/radon. Accessed July 5, 2024.
2. US EPA. Health Risks of Radon. Available at: https://www.epa.gov/radon/health-risk-radon. Accessed july 5, 2024.